CN113981984A - Supporting structure and construction method thereof - Google Patents
Supporting structure and construction method thereof Download PDFInfo
- Publication number
- CN113981984A CN113981984A CN202111303962.0A CN202111303962A CN113981984A CN 113981984 A CN113981984 A CN 113981984A CN 202111303962 A CN202111303962 A CN 202111303962A CN 113981984 A CN113981984 A CN 113981984A
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- Prior art keywords
- soil
- base
- pile
- steel bars
- facing surface
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- 238000010276 construction Methods 0.000 title claims abstract description 46
- 239000002689 soil Substances 0.000 claims abstract description 133
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 claims description 43
- 239000010959 steel Substances 0.000 claims description 43
- 230000003014 reinforcing effect Effects 0.000 claims description 30
- 238000005266 casting Methods 0.000 claims description 19
- 238000005553 drilling Methods 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 8
- 238000009412 basement excavation Methods 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 description 13
- 230000002787 reinforcement Effects 0.000 description 13
- 230000000903 blocking effect Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004162 soil erosion Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
Abstract
The invention discloses a supporting structure and a construction method thereof, wherein the supporting structure is used for foundation pit supporting and comprises the following components: a support pile and a retaining wall. The supporting piles can be positioned in the foundation; retaining wall includes basement and fender soil portion, and the upper surface in the basement is connected in the upper end of fender pile in the fender soil portion, and fender soil portion has the second and meets the soil face, and the second meets the soil face and extends along the axis direction of fender pile, and the upper surface of basement includes first meeting the soil face, and the axis that first meeting the soil face is located fender pile is met the soil face along the second and is faced one side of fender pile. After the foundation pit soil is backfilled, the second soil facing surface and the first soil facing surface are subjected to the pressure of backfilled soil, opposite bending moments are generated at the bottom of the supporting and protecting pile to offset each other, the safety of the supporting and protecting structure is improved, in addition, the strength requirement of reinforcing steel bars can be reduced, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of support, in particular to a support structure and a construction method thereof
Background
The existing commonly used construction method of the support pile is a cast-in-situ bored pile, the side pressure of the poured support pile is large, the bottom of the support pile is subjected to large bending moment, the safety risk of the support pile is increased, and in order to ensure safety, a steel bar with high strength is required to support the support pile, so that the cost is high. In addition, during construction, the cast-in-situ bored pile is greatly influenced by a site, the requirement on the site is high, a certain safety distance needs to be kept between the drill and peripheral buildings and a side slope free face, the requirement on the bearing capacity, stability and rigidity of a foundation of a supporting pile construction face is met, the construction safety risk of a pile splicing process is high, and the construction period is long.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the supporting structure provided by the invention can reduce the bending moment applied to the bottom of the supporting structure, and is high in safety during construction and fast in construction period.
The invention further provides a construction method of the supporting structure.
The supporting structure according to an embodiment of the first aspect of the present invention is used for supporting a foundation pit, and includes:
a support pile locatable within a foundation;
the retaining wall comprises a base and a retaining part, wherein the retaining part is connected to the upper surface of the base, the base is connected to the upper end of the support pile, the retaining part is provided with a second soil facing surface, the second soil facing surface extends along the axis direction of the support pile, the upper surface of the base comprises a first soil facing surface, and the central point of the first soil facing surface is located on the support pile.
The supporting structure provided by the embodiment of the invention at least has the following beneficial effects:
after the foundation pit soil is backfilled, the second soil facing surface of the soil retaining part and the first soil facing surface of the base can be abutted against the backfilled soil, and the loss of the backfilled soil is prevented. The backfill applies a lateral thrust to the second soil-facing surface, so that the supporting structure generates a negative bending moment (the direction of the bending moment is determined by the orientation of the second soil-facing surface, and for convenience of description, the direction of the bending moment is not necessarily negative, and may be positive) at the bottom of the supporting pile, and a vertical downward pressure is applied to the first soil-facing surface, so that the bottom of the supporting pile generates a positive bending moment to offset the generated negative bending moment, thereby improving the safety of the supporting structure.
According to some embodiments of the invention, the soil retaining wall further comprises an anchor cable, one end of the anchor cable is connected to the soil retaining wall, and the other end of the anchor cable is connected to the foundation on the side facing the second soil facing surface;
and/or one end of the anchor cable is connected to the upper end of the support pile, and the other end of the anchor cable is connected to the foundation on one side of the second soil facing surface.
According to some embodiments of the present invention, the retaining wall further comprises a reinforcing member having one end connected to the second soil facing surface and the other end connected to the second soil facing surface.
According to some embodiments of the invention, the pile comprises a front pile shield connected to a side of the support pile, the front pile shield having a third soil facing surface facing the same direction as the second soil facing surface.
A construction method of a supporting structure according to an embodiment of a second aspect of the present invention is used for constructing the supporting structure according to the above embodiment, and includes the steps of:
drilling a hole on the foundation;
pouring the support piles in the holes;
and pouring the upper end of the support pile to form the retaining wall.
The construction method of the supporting structure provided by the embodiment of the invention at least has the following beneficial effects: the construction period is short, and the safety is high.
According to some embodiments of the invention, the step of casting the support piles comprises:
preparing a support pile steel bar;
putting the support pile steel bars into the holes;
and pouring concrete into the hole, enabling the upper ends of part of the supporting pile reinforcing steel bars to be positioned outside the concrete, and forming the supporting pile after the concrete is solidified.
According to some embodiments of the invention, the step of casting the retaining wall comprises:
arranging a base mold at the upper end of the support pile;
arranging base steel bars and connecting steel bars in the base mould, enabling the connecting steel bars to be positioned outside the base mould, and connecting the base steel bars with the supporting pile steel bars;
pouring concrete into the substrate mould, forming the substrate after the concrete is solidified, wherein the connecting steel bar part is positioned outside the substrate;
arranging a retaining part reinforcing steel bar on the upper surface of the base, and connecting the retaining part reinforcing steel bar with the part of the connecting reinforcing steel bar, which is positioned outside the base;
enclosing the periphery of the reinforcing steel bars of the soil retaining part by using a template to form a soil retaining part mold;
and pouring concrete into the soil retaining part mold, and forming the soil retaining part after the concrete is solidified.
According to some embodiments of the invention, the step of casting the retaining wall comprises:
arranging a base mold at the upper end of the support pile;
arranging base steel bars in the base mould, and connecting the base steel bars with the support pile steel bars;
connecting retaining part reinforcing steel bars on the base reinforcing steel bars;
enclosing the periphery of the reinforcing steel bars of the soil retaining part by using a template to form a soil retaining part mold, wherein the base mold is communicated with the soil retaining part mold;
and pouring concrete into the base mold and the soil retaining part mold, and forming the soil retaining wall after the concrete is solidified.
According to some embodiments of the invention, casting the retaining wall further comprises the steps of:
and arranging reinforcing piece reinforcing steel bars between the base reinforcing steel bars and the retaining part reinforcing steel bars, arranging reinforcing piece molds around the reinforcing piece reinforcing steel bars for pouring to form reinforcing pieces, and connecting the reinforcing pieces between the base and the retaining part.
According to some embodiments of the invention, the method further comprises the steps of fixing one end of an anchor cable to the retaining wall, and fixing the other end of the anchor cable to the foundation on one side of the retaining wall facing the second soil facing surface;
and/or fixing one end of the anchor cable on the upper end of the support pile, and fixing the other end of the anchor cable on the foundation on one side of the support pile facing the second soil facing surface.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
fig. 1 is a schematic cross-sectional view of a supporting structure according to an embodiment of the first aspect of the present invention;
figure 2 is a top plan view of the supporting structure of the embodiment of the invention of figure 1;
FIG. 3 is a flow chart of a construction method of a supporting structure according to a second aspect of the invention;
FIG. 4 is a flow chart of a method of casting the support piles of FIG. 3;
FIG. 5 is a flow chart of a method of casting the retaining wall of FIG. 3;
fig. 6 is a flow chart of another method of casting the retaining wall of fig. 3.
Reference numerals:
a retaining wall 200, a base 210, a first soil facing surface 211, a center point 2111, a retaining portion 220, a second soil facing surface 221, a reinforcement 230;
a pile front baffle 300 and a third soil facing surface 310.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Fig. 1 is a schematic cross-sectional view of a supporting structure according to a first aspect of the present invention, and fig. 2 is a top view of the supporting structure according to the first aspect of the present invention in fig. 1, and in combination with fig. 1 and fig. 2, the supporting structure according to the first aspect of the present invention is used for supporting a foundation pit, and includes: a support pile 100, and a retaining wall 200.
The support piles 100 can be located in the foundation (undisturbed soil of the foundation pit). The retaining wall 200 includes a base 210 and a retaining portion 220, the retaining portion 220 is connected to the upper surface of the base 210, the base 210 is connected to the upper end of the support pile 100, the retaining portion 220 has a second soil facing surface 221, the second soil facing surface 221 extends along the axial direction of the support pile 100, the upper surface of the base 210 includes a first soil facing surface 211, a central point 2111 of the first soil facing surface 211 is located on a side of the support pile 100 facing in the vertical direction of the axial line 110 along the second soil facing surface 221, the second soil facing surface 221 can receive the lateral pressure of backfill soil, and the first soil facing surface 211 can receive the vertical pressure of the backfill soil.
Specifically, it is understood that the supporting structure of the present embodiment is fixed on the foundation, the supporting piles 100 are located inside the foundation, and the supporting piles 100 may be in a single row, a double row or multiple rows, and usually there are multiple supporting piles 100 in each row. The retaining wall 200 is located outside the foundation, and when the foundation pit is backfilled with soil, the backfill soil (soil backfilled to the foundation pit) presses the second soil facing surface 221 of the retaining portion 220 and the first soil facing surface 211 of the foundation 210, that is, the second soil facing surface 221 and the upper surface of the foundation 210 can be supported by the backfill soil, so as to prevent the backfill soil from losing. The backfill applies a lateral thrust to the second soil-facing surface 221, so that the supporting structure generates a negative bending moment (the direction of the bending moment is determined by the orientation of the second soil-facing surface 221, and herein, for convenience of description only, it is not necessarily negative, and may be positive) at the bottom of the supporting pile 100, and applies a vertically downward pressure to the first soil-facing surface 211, and since the central point 2111 of the first soil-facing surface 211 is located on the side of the supporting pile 100 facing the second soil-facing surface 221 in the vertical direction along the axis 110, as shown in fig. 2. Therefore, the force applied to the first soil facing surface 211 (in practice, the force applied to the first soil facing surface 211 is an even distribution force, and for clearly expressing the moment force application point and the moment force application direction, the application simplifies the even distribution force into a concentrated force applied to the central point 2111 of the first soil facing surface 211) can generate a positive bending moment at the bottom of the support pile 100, so as to offset a negative bending moment generated by the force applied to a part of the second soil facing surface 221, and improve the safety of the support structure. In addition, compared with the prior art, the supporting structure of the embodiment can reduce the strength requirement of the reinforcing steel bar on the premise of ensuring safety, so that the cost is reduced.
In addition to the above-mentioned embodiments, the supporting structure further includes anchor lines (not shown), one end of each anchor line is connected to the retaining wall 200, and the other end of each anchor line is connected to the foundation of the retaining wall 200 facing one side along the second soil facing surface 221. Alternatively, one end of the anchor line is connected to the upper end of the support pile 100, and the other end is connected to the foundation of the support pile 100 facing one side along the second soil-facing surface 221. Alternatively, the anchor lines are connected at one end to the retaining wall 200 and the upper end of the support piles 100, and at the other end to the foundation of the support piles 100 facing one side along the second soil-facing surface 221.
Specifically, it can be understood that one end of the anchor cable is connected to the retaining wall 200, and the other end is connected to the ground, and when the second soil facing surface 221 is subjected to the lateral pressure of the backfill soil, the anchor cable provides a reverse direction pulling force, so that the retaining part 220 is stressed in a balanced manner, the position of the supporting structure is prevented from being changed, and the safety of the supporting structure is improved. The same applies when one end of the anchor line is connected to the upper end of the support pile 100 and the other end is connected to the foundation of the support pile 100 facing one side along the second soil-facing surface 221, and the description thereof will not be repeated.
It should be noted that, when a plurality of anchor cables are needed to be provided in the supporting structure of this embodiment, one end of each of the anchor cables may be connected to the retaining wall 200, and the other end of each of the anchor cables may be connected to the foundation of the retaining wall 200 facing one side along the second soil facing surface 221. One end of a part of the anchor lines is connected to the upper end of the support pile 100, and the other end is connected to the foundation of the support pile 100 facing one side along the second soil facing surface 221. One end of a part of the anchor lines is connected to the retaining wall 200 and the upper end of the support piles 100, and the other end is connected to the foundation of the support piles 100 facing one side along the second soil-facing surface 221.
Referring to fig. 1 and 2, in some embodiments, the retaining wall 200 further includes a reinforcing member 230, and one end of the reinforcing member 230 is connected to the first soil facing surface 211 and the other end is connected to the second soil facing surface 221. Specifically, when the second soil facing surface 221 is subjected to lateral pressure of the backfill soil, a large bending moment is applied to the connection between the soil guard 220 and the foundation 210. Therefore, the reinforcing member 230 is added between the soil guard part 220 and the foundation 210, the reinforcing member 230 may be a buttress structure, an armpit structure, a tie rod, or the like, and the reinforcing member 230 can improve the connection strength between the soil guard part 220 and the foundation 210, and ensure that the soil guard part 220 is not broken at the connection part with the foundation 210, thereby improving the safety of the supporting structure. In addition, the cross section of the soil blocking portion 220 may be gradually increased from top to bottom, so that the joint of the soil blocking portion 220 and the base 210 has greater strength.
Referring to fig. 1, in some embodiments, the supporting structure further includes a pile front baffle 300, the pile front baffle 300 being connected to a side of the support pile 100, the pile front baffle 300 having a third soil facing surface 310, the third soil facing surface 310 being oriented in the same direction as the second soil facing surface 221. Specifically, the front pile baffle 300 is located on the side of the support piles 100 and on the lower surface of the foundation 210 to support the foundation 210, the third soil facing surface 310 and the second soil facing surface 221 both face one side of the backfill soil, and the third soil facing surface 310 of the front pile baffle 300 can block the backfill soil or the undisturbed soil of the foundation from moving between the support piles 100 to prevent soil erosion. The third soil-facing surface 310 of the pile front baffle 300 is connected to the side surface of the support pile 100, or the surface facing away from the third soil-facing surface 310 is connected to the support pile 100.
Referring to fig. 3, fig. 3 is a flowchart illustrating a construction method of a supporting structure according to an embodiment of the second aspect of the present invention, and the construction method of a supporting structure according to an embodiment of the second aspect of the present invention is used for constructing a supporting structure according to an embodiment of the first aspect, and includes the following steps:
s100, drilling a hole on the foundation;
s200, pouring in the holes to form the support piles 100;
and S300, pouring the upper end of the support pile 100 to form the retaining wall 200.
Specifically, the foundation is drilled by a drilling machine, and the diameter of the hole is determined according to the bearing capacity required by the support pile 100. And after the hole is drilled, pouring concrete into the hole. When a plurality of holes need to be drilled, when a rear hole is drilled, the holes drilled in the past can be poured so as to accelerate the construction speed. It should be noted that the pouring hole and the hole being drilled should be kept at a certain interval to ensure the safety of construction. After all the support piles 100 are solidified and dried, the upper ends of the support piles 100 are poured to form the retaining wall 200, and the height of the retaining wall 200 is determined according to actual requirements.
It is understood that the construction method of the supporting structure of the present embodiment sets the upper portion of the supporting pile 100 in the conventional art as the retaining wall 200, that is, the supporting pile 100 inside the foundation and the retaining wall 200 outside the foundation, compared with the supporting structure of the conventional support. The drilling machine directly drills on the undisturbed soil, the distance between the drilling machine and the backfill soil side slope does not need to be considered, the undisturbed soil is high in density, the bearing capacity of the drilling machine is high, and construction is safer. In addition, pile splicing (pile splicing: adopting a high-altitude supporting and setting cylindrical template, the reinforcement cage and the template are higher and are not beneficial to fixing, the construction precision is difficult to guarantee, the safety risk is high, the construction difficulty is high, the construction period is long.) is not required in the embodiment, and the construction risk, the construction difficulty and the construction period are reduced.
Referring to fig. 4, fig. 4 is a flowchart of a method of casting a support pile of fig. 3, and in some embodiments, the step of casting the support pile 100 includes:
s210, preparing a support pile steel bar;
s220, placing a support pile steel bar in the hole;
and S230, pouring concrete into the hole, enabling part of the supporting pile reinforcing steel bars to be positioned outside the concrete, and forming the supporting pile 100 after the concrete is solidified.
Specifically, a common single reinforcing steel bar is built in a welding or bundling mode to form a tubular or cylindrical supporting pile reinforcing steel bar, the overall height of the supporting pile reinforcing steel bar is larger than the depth of a hole drilled by a drilling machine, and when the supporting pile reinforcing steel bar is placed into the hole, the outside of the hole is provided with allowance. Therefore, after the casting of the support pile 100 is completed, a part of the support pile reinforcement bars is reserved outside the support pile 100.
Referring to fig. 5, fig. 5 is a flowchart of a method of casting the retaining wall of fig. 3, and in some embodiments, the step of casting the retaining wall 200 includes:
s310, arranging a base mold at the upper end of the support pile 100;
s320, arranging base steel bars and connecting steel bars in the base mold, enabling the connecting steel bars to be located outside the base mold, and connecting the base steel bars with the supporting pile steel bars;
s330, pouring concrete into the substrate mould, and forming a substrate 210 after the concrete is solidified;
s340, arranging a soil retaining portion reinforcing bar on the upper surface of the base 210, and connecting the soil retaining portion reinforcing bar with the connection reinforcing bar;
s350, enclosing the periphery of the reinforcing steel bars of the soil retaining part by using a template to form a soil retaining part mold;
and S360, pouring concrete into the soil retaining part mold, and forming the soil retaining part 220 after the concrete is solidified.
Specifically, a base 210 is provided at an upper end of the support pile 100 to shape the base 210. It should be noted that, in the above embodiments, the supporting pile reinforcing bars reserved outside the supporting pile 100 are located in the base mold, the base reinforcing bars are arranged in the base mold, and the base reinforcing bars and the supporting pile reinforcing bars are connected together by welding or the like, so as to enhance the connection strength between the supporting pile 100 and the base 210. In addition, the base steel bars are provided with connecting steel bars. The connecting bars are connected to the base bars, and when concrete is poured into the base mold to form the base 210, the connecting bars are partially positioned on the upper surface of the base 210 so as to be connected to the soil retaining portion bars in the following.
After the concrete of the foundation 210 is dried, a soil retaining portion reinforcement is provided on one side of the upper surface of the foundation 210 adjacent to the support piles 100, and the soil retaining portion reinforcement is connected to the connection reinforcement. After the reinforcing bars of the retaining part are arranged, the periphery of the reinforcing bars of the retaining part is enclosed by a template to form a retaining part mold. Then, the concrete is poured into the mold for the soil-blocking portion, and the mold for the soil-blocking portion is removed after the concrete is dried, thereby forming the soil-blocking portion 220. The retaining portion mold may be made of a material such as a mold plate, an aluminum plate, or a steel plate.
It should be noted that the portion of the upper surface of the foundation 210 not connected to the soil blocking portion 220 is a first soil facing surface 211, the side surface of the soil blocking portion 220 close to the first soil facing surface 211 is a second soil facing surface 221, and the first soil facing surface 211 and the second soil facing surface 221 intersect to form an included angle.
It should be noted that, in this embodiment, the foundation reinforcement is provided after the support pile 100 is cast, and it cannot be interpreted that the foundation reinforcement is set up after the support pile 100 is cast. Can be set according to actual construction conditions, such as:
the integral size scale of the supporting structure required to be constructed is small, the base steel bars can be built in advance under the condition that the outline of the supporting structure is kept unchanged in the construction process, and after all supporting piles 100 are poured, the built base steel bars are placed in a base mold and connected with the supporting pile steel bars, so that the construction efficiency is improved.
Secondly, the overall dimension of the supporting structure required to be constructed is large, and in the construction process, the mode of splicing can be selected to be adopted under the condition that the outline of the supporting structure is kept unchanged, the base steel bars are divided into a plurality of parts to be built, and after the supporting pile 100 is poured, the base steel bars of all the parts are placed in the die and spliced mutually to form the finished base steel bars and are connected with the reinforcing steel bars of the supporting pile, so that the construction efficiency is improved.
And thirdly, under the condition that the overall size of the supporting structure to be constructed is large and the overall outline of the supporting structure is difficult to determine and not change in the construction process, after the supporting pile 100 is poured, the supporting structure is directly built on the 100 liters supporting pile, so that the construction precision is ensured.
Further, the retaining portion reinforcement is provided after the foundation 210 is cast, and the same reason cannot be interpreted as that the retaining portion reinforcement building is performed after the foundation 210 is cast, and will not be described here.
Referring to fig. 6, fig. 6 is a flowchart illustrating another method of casting a retaining wall of fig. 3, in order to accelerate a construction period, a foundation 210 is cast simultaneously with a retaining portion 220. Based on this, in some embodiments, the step of casting the retaining wall 200 includes:
s310', arranging a base mold at the upper end of the support pile 100;
s320', arranging base steel bars in the base mould, and connecting the base steel bars with supporting pile steel bars;
s330', connecting the reinforcing steel bars of the soil retaining part on the base reinforcing steel bars;
s340', enclosing the periphery of the reinforcing steel bars of the soil retaining part by using a template to form a soil retaining part mold, wherein the base mold is communicated with the soil retaining part mold;
s350', pouring concrete into the base mold and the soil blocking portion mold, and forming the soil blocking wall 200 after the concrete is solidified.
In some embodiments, casting the retaining wall 200 further comprises the steps of:
set up the reinforcement reinforcing bar between basement reinforcing bar and retaining portion reinforcing bar to set up the reinforcement mould around the reinforcement reinforcing bar, with the joint strength who strengthens basement 210 and retaining portion 220, ensure in the use, retaining portion 220 and basement 210 can not fracture.
In some embodiments, the method of supporting structure construction further comprises the steps of: the anchor lines are fixed at one end to the retaining wall 200 and at the other end to the foundation along the second soil facing surface 221 of the retaining wall 200. Alternatively, one end of the anchor line is fixed to the upper end of the support pile 100 and the other end is fixed to the foundation of the support pile 100 facing one side along the second soil-facing surface 221, or one end of the anchor line is fixed to the upper ends of the retaining wall 200 and the support pile 100 and the other end is fixed to the foundation of the retaining wall 200 facing one side along the second soil-facing surface 221. So as to improve the overall lateral pressure resistance of the supporting structure.
In some embodiments, the method of supporting structure construction further comprises the steps of;
digging a groove on the foundation;
and pouring the pile front baffle 300 in the groove.
Specifically, a trench is dug in the foundation, and the front baffle steel bar of the pile is placed in the trench, and concrete is poured into the trench to form the front baffle 300 of the pile. It should be noted that S100 and S500 are not limited in sequence, that is, a hole may be drilled in the foundation first, or a hole may be drilled in the foundation first. In addition, S200 and S600 are not limited in sequence, the supporting pile 100 may be formed by casting the front pile baffle 300 first and then the supporting pile 100, and the supporting pile 100 and the front pile baffle 300 may be cast simultaneously, thereby improving the construction efficiency.
In addition, when drilling and grooving, the hole and the groove can be communicated, and the support pile reinforcing steel bar and the pile front baffle reinforcing steel bar are connected, so that the pile front baffle 300 and the support pile 100 form an integral structure when concrete is poured, and the integral strength is improved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. Supporting construction for excavation supporting, its characterized in that includes:
a support pile locatable within a foundation;
the retaining wall comprises a base and a retaining part, wherein the retaining part is connected to the upper surface of the base, the base is connected to the upper end of the support pile, the retaining part is provided with a second soil facing surface, the second soil facing surface extends along the axis direction of the support pile, the upper surface of the base comprises a first soil facing surface, and the central point of the first soil facing surface is located on the support pile.
2. The support structure of claim 1, further comprising anchor lines connected at one end to the retaining wall and at the other end to the foundation on the side facing the second soil-facing surface;
and/or one end of the anchor cable is connected to the upper end of the support pile, and the other end of the anchor cable is connected to the foundation on one side of the second soil facing surface.
3. The supporting structure of claim 1, wherein the retaining wall further comprises a reinforcing member having one end connected to the second soil-facing surface and the other end connected to the second soil-facing surface.
4. The support structure of claim 1, further comprising a front pile shield connected to a side of the support pile, the front pile shield having a third soil facing surface that is in the same orientation as the second soil facing surface.
5. A supporting construction method for constructing a supporting structure according to any one of claims 1 to 4, comprising the steps of:
drilling a hole on the foundation;
pouring the support piles in the holes;
and pouring the upper end of the support pile to form the retaining wall.
6. The supporting structure construction method according to claim 5, wherein the step of pouring the supporting piles comprises:
preparing a support pile steel bar;
putting the support pile steel bars into the holes;
and pouring concrete into the hole, enabling the upper ends of part of the supporting pile reinforcing steel bars to be positioned outside the concrete, and forming the supporting pile after the concrete is solidified.
7. The supporting structure construction method as claimed in claim 6, wherein the step of casting the retaining wall includes:
arranging a base mold at the upper end of the support pile;
arranging base steel bars and connecting steel bars in the base mould, enabling the connecting steel bars to be positioned outside the base mould, and connecting the base steel bars with the supporting pile steel bars;
pouring concrete into the substrate mould, forming the substrate after the concrete is solidified, wherein the connecting steel bar part is positioned outside the substrate;
arranging a retaining part reinforcing steel bar on the upper surface of the base, and connecting the retaining part reinforcing steel bar with the part of the connecting reinforcing steel bar, which is positioned outside the base;
enclosing the periphery of the reinforcing steel bars of the soil retaining part by using a template to form a soil retaining part mold;
and pouring concrete into the soil retaining part mold, and forming the soil retaining part after the concrete is solidified.
8. The supporting structure construction method as claimed in claim 6, wherein the step of casting the retaining wall includes:
arranging a base mold at the upper end of the support pile;
arranging base steel bars in the base mould, and connecting the base steel bars with the support pile steel bars;
connecting retaining part reinforcing steel bars on the base reinforcing steel bars;
enclosing the periphery of the reinforcing steel bars of the soil retaining part by using a template to form a soil retaining part mold, wherein the base mold is communicated with the soil retaining part mold;
and pouring concrete into the base mold and the soil retaining part mold, and forming the soil retaining wall after the concrete is solidified.
9. The supporting structure construction method as claimed in claim 8, wherein the casting of the retaining wall further comprises the steps of:
and arranging reinforcing piece reinforcing steel bars between the base reinforcing steel bars and the retaining part reinforcing steel bars, arranging reinforcing piece molds around the reinforcing piece reinforcing steel bars for pouring to form reinforcing pieces, and connecting the reinforcing pieces between the base and the retaining part.
10. The supporting structure construction method according to claim 5, further comprising the steps of fixing an anchor cable at one end to the retaining wall and at the other end to the foundation along the second soil-facing surface on the side of the retaining wall facing the ground;
and/or fixing one end of the anchor cable on the upper end of the support pile, and fixing the other end of the anchor cable on the foundation on one side of the support pile facing the second soil facing surface.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111303962.0A CN113981984A (en) | 2021-11-05 | 2021-11-05 | Supporting structure and construction method thereof |
| PCT/CN2022/106493 WO2023077867A1 (en) | 2021-11-05 | 2022-07-19 | Supporting structure and construction method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111303962.0A CN113981984A (en) | 2021-11-05 | 2021-11-05 | Supporting structure and construction method thereof |
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| CN113981984A true CN113981984A (en) | 2022-01-28 |
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| CN202111303962.0A Pending CN113981984A (en) | 2021-11-05 | 2021-11-05 | Supporting structure and construction method thereof |
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| WO (1) | WO2023077867A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023077867A1 (en) * | 2021-11-05 | 2023-05-11 | 中建科工集团有限公司 | Supporting structure and construction method therefor |
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| WO2023077867A1 (en) | 2023-05-11 |
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